Integral of $$$\frac{\tan^{2}{\left(\tanh{\left(\eta \right)} \right)} \sec{\left(\tanh{\left(\eta \right)} \right)}}{2}$$$
The calculator will find the integral/antiderivative of $$$\frac{\tan^{2}{\left(\tanh{\left(\eta \right)} \right)} \sec{\left(\tanh{\left(\eta \right)} \right)}}{2}$$$, with steps shown.
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Find $$$\int \frac{\tan^{2}{\left(\tanh{\left(\eta \right)} \right)} \sec{\left(\tanh{\left(\eta \right)} \right)}}{2}\, d\eta$$$.